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Old November 26, 2017   #74
Cole_Robbie
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Join Date: Jun 2012
Location: Illinois, zone 6
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The required composition of nutrients for the plant will change as it grows, so trying to do it with one product is an approximation. I don't know that there is one right answer. Osmocote works ok for me. The npk numbers are equal, I believe. That product you linked to seems low in phosphorous and very high in sulphur. Does that have anything to do with the composition of your local soils? You might ask the company if it is appropriate for container growing, or if it is meant to be used on fields.
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